EPGVB100ACS 172.39 USD. EPGVB100A EPGVB-100C. Economy Certified Glass VOA Vials with 0.125" Septa, Thermo Scientific. Vials Water Sampling Vials. Septa vials with all the essentials and none of the frills. Vial shoulder slope optimized to prevent air bubble entrapment. Clear or amber vials; Amber is recommended for light-sensitive analytes.